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Sonic Frontiers SFS-40

Stereo Tube Amplifier

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Sonic Frontiers SFS-40

Specifications

Power output: 45 watts per channel (stereo)

Frequency response: 5Hz to 40kHz

Input sensitivity: 0.8V

Valve complement: 4 x EL34/E34L, 4 x 6DJ8

Dimensions: 16 x 12.5 x 7 inches

Weight: 36lbs

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Reviewed Jun 28th, 2018 by tomvette

I've owned a Sonic Frontiers SFS 40 since 2000. I'm the second owner. Sonically the amplifier produces a very deep soundstage. The mid frequencies are very transparent without harshness. This amp sounds fairly neutral when compared to my other tube amps (minimal coloration). That said the bass is a bit dependent on the loading of the speakers as the internal impedance is higher than solid state amplifiers.

 

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